Its louder for sure, if your looking for a quiet ride then you probobally don't want to do it. The sound wasn't too overpowering but it was loud. It could be pretty annoying at times, especially when it wasn't warmed up. But once I added the supercharger it sounds awesome! Yeah, its still somewhat loud but its a deeper more powerful loud and I love it! I get an extra mpg with the PV muffler